Q-switched Nd lasers pumped directly into the 4F3/2 emitting level
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| Title: | Q-switched Nd lasers pumped directly into the 4F |
|---|---|
| Authors: | Pavel, N. nicolaie.pavel@inflpr.ro, Dascalu, T.1, Salamu, G.1, Sandu, O.1, Leca, A.1, Lupei, V.1 |
| Source: | Optics Communications. Dec2009, Vol. 282 Issue 24, p4749-4754. 6p. |
| Subjects: | Switching theory, Neodymium glass lasers, Optical pumping, Fluorine isotopes, Chromium ions, Wavelengths, Acoustooptics, Solid state physics |
| Abstract: | Abstract: The influence of the direct pumping into the 4F3/2 emitting level on the output characteristics of continuous-wave (CW) pumped, passively or actively (acoustooptic, AO) Q-switched Nd lasers is discussed. In case of passive Q-switching by Cr4+:YAG saturable absorber (SA) crystal, the change of pumping wavelength from 0.81μm into the highly-absorbing 4F5/2 level to 0.88μm into the 4F3/2 level of Nd does not modify the energy of the Q-switch pulse, but increases the pulse repetition rate and the laser average power for the same absorbed pump power. This is demonstrated with 0.81 and 0.88μm CW laser diode-pumped Nd:YAG and Nd-vanadate lasers with average output power in the watt-level range at 1.06μm. The effect is explained by the control of passive Q-switching by the intracavity photon flux that is influenced by the pump wavelength and by the initial transmission of the SA crystal. On the other hand, it is discussed and experimentally proved that due to the possibility to control externally the frequency of switching, in case of the AO Q-switched Nd laser the change of the pump wavelength from 0.81 to 0.88μm increases the pulse energy for a fixed frequency, leading to a corresponding increase of the average laser power. [Copyright &y& Elsevier] |
| Copyright of Optics Communications is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 44943498 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Q-switched Nd lasers pumped directly into the <superscript>4</superscript>F<subscript>3/2</subscript> emitting level – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Pavel%2C+N%2E%22">Pavel, N.</searchLink><i> nicolaie.pavel@inflpr.ro</i><br /><searchLink fieldCode="AR" term="%22Dascalu%2C+T%2E%22">Dascalu, T.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Salamu%2C+G%2E%22">Salamu, G.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Sandu%2C+O%2E%22">Sandu, O.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Leca%2C+A%2E%22">Leca, A.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Lupei%2C+V%2E%22">Lupei, V.</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Optics+Communications%22">Optics Communications</searchLink>. Dec2009, Vol. 282 Issue 24, p4749-4754. 6p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Switching+theory%22">Switching theory</searchLink><br /><searchLink fieldCode="DE" term="%22Neodymium+glass+lasers%22">Neodymium glass lasers</searchLink><br /><searchLink fieldCode="DE" term="%22Optical+pumping%22">Optical pumping</searchLink><br /><searchLink fieldCode="DE" term="%22Fluorine+isotopes%22">Fluorine isotopes</searchLink><br /><searchLink fieldCode="DE" term="%22Chromium+ions%22">Chromium ions</searchLink><br /><searchLink fieldCode="DE" term="%22Wavelengths%22">Wavelengths</searchLink><br /><searchLink fieldCode="DE" term="%22Acoustooptics%22">Acoustooptics</searchLink><br /><searchLink fieldCode="DE" term="%22Solid+state+physics%22">Solid state physics</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract: The influence of the direct pumping into the 4F3/2 emitting level on the output characteristics of continuous-wave (CW) pumped, passively or actively (acoustooptic, AO) Q-switched Nd lasers is discussed. In case of passive Q-switching by Cr4+:YAG saturable absorber (SA) crystal, the change of pumping wavelength from 0.81μm into the highly-absorbing 4F5/2 level to 0.88μm into the 4F3/2 level of Nd does not modify the energy of the Q-switch pulse, but increases the pulse repetition rate and the laser average power for the same absorbed pump power. This is demonstrated with 0.81 and 0.88μm CW laser diode-pumped Nd:YAG and Nd-vanadate lasers with average output power in the watt-level range at 1.06μm. The effect is explained by the control of passive Q-switching by the intracavity photon flux that is influenced by the pump wavelength and by the initial transmission of the SA crystal. On the other hand, it is discussed and experimentally proved that due to the possibility to control externally the frequency of switching, in case of the AO Q-switched Nd laser the change of the pump wavelength from 0.81 to 0.88μm increases the pulse energy for a fixed frequency, leading to a corresponding increase of the average laser power. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Optics Communications is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.optcom.2009.08.067 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 6 StartPage: 4749 Subjects: – SubjectFull: Switching theory Type: general – SubjectFull: Neodymium glass lasers Type: general – SubjectFull: Optical pumping Type: general – SubjectFull: Fluorine isotopes Type: general – SubjectFull: Chromium ions Type: general – SubjectFull: Wavelengths Type: general – SubjectFull: Acoustooptics Type: general – SubjectFull: Solid state physics Type: general Titles: – TitleFull: Q-switched Nd lasers pumped directly into the 4F3/2 emitting level Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Pavel, N. – PersonEntity: Name: NameFull: Dascalu, T. – PersonEntity: Name: NameFull: Salamu, G. – PersonEntity: Name: NameFull: Sandu, O. – PersonEntity: Name: NameFull: Leca, A. – PersonEntity: Name: NameFull: Lupei, V. IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 12 Text: Dec2009 Type: published Y: 2009 Identifiers: – Type: issn-print Value: 00304018 Numbering: – Type: volume Value: 282 – Type: issue Value: 24 Titles: – TitleFull: Optics Communications Type: main |
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